squaring off in that first debate. it's going to be held in denver. today the president is doing prep work in nevada while his challenger travels to denver for a campaign rally. familiar faces from both parties are going to hit the sunday talk shows for a preview. >> president obama's a very gifted -- he's a very gifted speaker. the man's been on the national stage for many years. this is mitt's first time on on this kind a stage. >> but he's got to relax, show a little sense of humor. he's got to show why he's likeable. >> wednesday evening's debate at university of denver will focus on domestic issues. >> yes. >> that ought to be very interesting. >> jobs, economy, health care, et cetera. >> and they'll have a suitcase full of zingers prepared to just hurl back and forth at each other. >> i thought that it was interesting, the expectations. people expect president obama by 2-1 to win the election. that's not necessarily who they're endorsing. whereas if you look at just a year ago, by an 18-point margin, people thoug